midterm review

It may be harmful when people compete to see who can hold their breath the longest under water. Without oxygen, brain cells

• cannot make enough ATP

• have too few mitochondria

• make too many enzymes

• have too much water

Tags

NGSS.HS-LS1-7

Some viruses attack cells by attaching to their outer covering, entering, and taking over their genetic “machinery.” Viruses are able to invade cells after first attaching to their

• nuclear membrane

• cell membrane

• genetic machinery

• viral proteins

A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rests in a shady area until its body temperature cools. This type of behavior is important to

• maintain homeostasis

• detect variations

• attract mates

• obtain nutrients

Tags

NGSS.HS-LS1-3

There are over 2000 kinds of edible insects in the world, and they are becoming an increasingly popular source of protein. One cup of cricket flour contains over 28 grams of protein. The building blocks of the protein in cricket flour are

• amino acids

• water

• simple sugars

• carbohydrates

Tags

NGSS.HS-LS1-6

A cell with receptors for two different hormones is represented above. Which chemical would most likely interfere with the activity of hormone A, but not hormone B?

• 
• 
• 
• 

Tags

NGSS.HS-LS1-3

The role of antibodies in the human body is to

• stimulate pathogen reproduction to produce additional white blood cells

• increase the production of guard cells to defend against pathogens

• promote the production of antigens to stimulate an immune response

• recognize foreign antigens and mark them for destruction

Which statement best describes these two molecules?

• Sugar molecules are inorganic and fat molecules are organic.

• Sugar molecules are organic and fat molecules are inorganic.

• Energy for life processes can be stored within chemical bonds of both molecules.

• Energy for life processes can be stored within the chemical bonds of sugar molecules, only.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which term best indicates the structures represented by the circle labeled X?

• organelle

• chromosomes

• organ systems

• tissues

Tags

NGSS.HS-LS1-2

Recently, a human trachea (a respiratory organ) was produced by using a patient’s own stem cells. The benefit of using the patient’s own cells to produce a trachea instead of receiving one from a donor is that

• there will be more enzymes produced to help maintain homeostasis in the trachea

• there will be an increase in the quantity of antibodies that the patient produces in response to the new trachea

• there is less of a chance that the patient’s immune system will attack the trachea

• there will be a greater response to any infectious agent that may enter the body

Placenta previa is a medical condition that occurs in some pregnant women. Women with this condition are often placed on bed rest, which prohibits them from any strenuous activity that may cause the blood vessels in the placenta to rupture. If not diagnosed, placenta previa can be a very dangerous condition because the placenta is

• the primary source of oxygen for the mother

• where the fetus obtains milk from the mother

• where nutrients and wastes are exchanged

• the primary source of estrogen and progesterone in the mother